Add `SpringApplicationShutdownHook` to manage orderly application
shutdown, specifically around the `LoggingSystem`. `SpringApplication`
now offers a `getShutdownHandlers()` method that can be used to add
handlers that are guaranteed to only run after the `ApplicationContext`
has been closed and is inactive.
Fixes gh-26660
Change `CompositeHealth.getDetails()` to public so that it serializes
correctly when `MapperFeature.CAN_OVERRIDE_ACCESS_MODIFIERS` is
disabled.
Fixes gh-26797
Fix a bug in `DataSourceInitializationConfiguration` and in
`R2dbcInitializationConfiguration` that was stopping
custom username/password properties from being applied.
Fixes gh-26676
Change the order of `DataSourceScriptDatabaseInitializerDetector` so
that it always runs last. This update allows script initialization to
be combined with a high-level migration tool such as Flyway.
Closes gh-26692
Update `DatabaseInitializationDependencyConfigurer` so that depends-on
ordering is applied based on the `DatabaseInitializerDetector` order.
Prior to this commit, if multiple DatabaseInitializer beans were
detected the order in which they were initialized was not defined.
See gh-26692
In our tests, the JNI code in Netty tcNative can cause some of its
classes to be loaded using a ModifiedClassPathClassLoader. When the
wrong class loader is used, SSL-related tests fail, for example due
to the same Netty tcNative classes being loaded by two different
ClassLoders and no longer being the same. This appears to be
dependent upon the order in which tests are executed and results in
intermittent test failures.
It looks like this should be addressed in Netty tcNative 2.0.40 which
preloads all of its classes. In the meantime, this commit updates
ModifiedClassPathClassLodaer to ignore Netty tcNative classes so that
they're only ever loaded by the system class loader.
Closes gh-26749